Protests Slow Pipeline Projects Across U.S., Canada

The Keystone XL pipeline was touted as a model for energy independence and a source of jobs when TransCanada Corp. announced plans to build the 1,700-mile pipeline six years ago.

But the crude-oil pipeline’s political and regulatory snarls since then have emboldened resistance to at least 10 other pipeline projects across North America. Using Keystone XL as a template, national environmental groups are joining with local activists in a strategy aimed at prolonging government reviews of proposed pipeline routes and their environmental...